Good product but it seems that you are still using the deprecated google plus api (“https://www.googleapis.com/plus/v1/people/me”). Kindly refer to the migration guide on how to migrate to the google identity/sign in api. You can use “https://www.googleapis.com/auth/userinfo.email”,
“https://www.googleapis.com/auth/userinfo.profile”
https://developers.google.com/identity/sign-in/web/quick-migration-guide
Just my opinion